37
12.10
GS/GD52
For 2 x 4 wire PT100
12.11
GS60
A
B
+
--
+
--
+
--
+
--
2 x state inputs are provided: A and B.
An open input is transmitted as a “1"
A closed input is transmitted as a “0"
Note: + is common. V open circuit is nominally V batt
Input impedance is approximately 10Kohm.
12.12
GC62
Input A: s
s
o
:
: Signal : -ve
Signal : -ve
o
Input B:
2 x pulse input transmitter.
Range 6V to 9V DC (regulated).
Power supply is MP9U from Eltek.
External power in
When external power is applied (and if greater than
the internal battery voltage), the external power is
used. If external power fails the internal batteries will
power the transmitter.
12.13
GC62EX
Not used
Input A: s
s
o
:
: Signal : -ve
Signal : -ve
o
Input B:
2 x pulse input transmitter for compliance to
IGEN (gas connection) requirements
